Mapping the Number Universe: formalizing set notation and Venn diagrams

Section role: supports the 'Mapping the Number Universe' section while the teacher formalizes vocabulary and notation using findings from the previous group activity. Slides: (1) Title — 'Mapping the Number Universe: Notation and Diagrams'; (2) Curly Braces and Notation — bullets: introduction of { } symbols, listing elements, defining '2' as an element of a set; (3) The Intersection — bullets: visual representation of overlapping circles, why the number '2' sits in both Even and Prime sets; (4) The Universal Set — bullets: defining the universal set as all numbers from the mystery bags, including non-matching ones; (5) Finite vs. Infinite Sets — bullets: comparing countable bag numbers with endless whole numbers; (6) The Empty Set — bullets: addressing the null set with the prompt 'Which circle holds 1/3 in the Whole Number set?'; (7) Closing Slide — prompt: 'How do curly brackets help us clearly define a collection of numbers?' to hand control back to the teacher for the upcoming individual practice.

Lara from Teachy